tyler.durden/audk
1
0
Fork 0
mirror of https://github.com/acidanthera/audk.git synced 2025-07-26 07:04:28 +02:00
Code Issues Packages Projects Releases Wiki Activity

UefiCpuPkg/S3Resume2Pei: Send S3 resume finished event to SmmCore.

Browse Source 
Driver will send S3 resume finished event to SmmCore through communicate
buffer after it signals EndOfPei event.

V2 Changes:
1. Change structures name to avoid they start with EFI_.
2. Base on DXE phase bits to provide communication buffer, current implement
check both PEI and DXE phase.

V3 Changes:
1. Change structure name for better understanding.
2. Enhance communication buffer calculate logic to more accurate.

Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
This commit is contained in:
Eric Dong 2017-10-11 09:25:07 +08:00
parent 59f0ef95e0
commit 18b13fabfa
2 changed files with 91 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

87
UefiCpuPkg/Universal/Acpi/S3Resume2Pei/S3Resume.c
View File

@ -28,6 +28,9 @@
#include <Ppi/SmmAccess.h> #include <Ppi/SmmAccess.h>
#include <Ppi/PostBootScriptTable.h> #include <Ppi/PostBootScriptTable.h>
#include <Ppi/EndOfPeiPhase.h> #include <Ppi/EndOfPeiPhase.h>
#include <Ppi/SmmCommunication.h>
#include <Protocol/SmmEndOfS3Resume.h>
#include <Library/DebugLib.h> #include <Library/DebugLib.h>
#include <Library/BaseLib.h> #include <Library/BaseLib.h>
@ -151,6 +154,22 @@ typedef union {
UINT64 Uint64; UINT64 Uint64;
} PAGE_TABLE_1G_ENTRY; } PAGE_TABLE_1G_ENTRY;
//
// Define two type of smm communicate headers.
// One for 32 bits PEI + 64 bits DXE, the other for 32 bits PEI + 32 bits DXE case.
//
typedef struct {
EFI_GUID HeaderGuid;
UINT32 MessageLength;
UINT8 Data[1];
} SMM_COMMUNICATE_HEADER_32;
typedef struct {
EFI_GUID HeaderGuid;
UINT64 MessageLength;
UINT8 Data[1];
} SMM_COMMUNICATE_HEADER_64;
#pragma pack() #pragma pack()
// //
@ -429,6 +448,68 @@ IsLongModeWakingVector (
return FALSE; return FALSE;
} }
/**
Send EndOfS3Resume event to SmmCore through communication buffer way.
@retval EFI_SUCCESS Return send the event success.
**/
EFI_STATUS
SignalEndOfS3Resume (
VOID
)
{
EFI_STATUS Status;
EFI_PEI_SMM_COMMUNICATION_PPI *SmmCommunicationPpi;
UINTN CommSize;
SMM_COMMUNICATE_HEADER_32 Header32;
SMM_COMMUNICATE_HEADER_64 Header64;
VOID *CommBuffer;
DEBUG ((EFI_D_INFO, "SignalEndOfS3Resume - Enter\n"));
//
// This buffer consumed in DXE phase, so base on DXE mode to prepare communicate buffer.
// Detect whether DXE is 64 bits mode.
// if (sizeof(UINTN) == sizeof(UINT64), PEI already 64 bits, assume DXE also 64 bits.
// or (FeaturePcdGet (PcdDxeIplSwitchToLongMode)), Dxe will switch to 64 bits.
//
if ((sizeof(UINTN) == sizeof(UINT64)) || (FeaturePcdGet (PcdDxeIplSwitchToLongMode))) {
CommBuffer = &Header64;
Header64.MessageLength = 0;
CommSize = OFFSET_OF (SMM_COMMUNICATE_HEADER_64, Data);
} else {
CommBuffer = &Header32;
Header32.MessageLength = 0;
CommSize = OFFSET_OF (SMM_COMMUNICATE_HEADER_32, Data);
}
CopyGuid (CommBuffer, &gEdkiiSmmEndOfS3ResumeProtocolGuid);
//
// Get needed resource
//
Status = PeiServicesLocatePpi (
&gEfiPeiSmmCommunicationPpiGuid,
0,
NULL,
(VOID **)&SmmCommunicationPpi
);
ASSERT_EFI_ERROR (Status);
//
// Send command
//
Status = SmmCommunicationPpi->Communicate (
SmmCommunicationPpi,
(VOID *)CommBuffer,
&CommSize
);
ASSERT_EFI_ERROR (Status);
DEBUG ((EFI_D_INFO, "SignalEndOfS3Resume - Exit (%r)\n", Status));
return Status;
}
/** /**
Jump to OS waking vector. Jump to OS waking vector.
The function will install boot script done PPI, report S3 resume status code, and then jump to OS waking vector. The function will install boot script done PPI, report S3 resume status code, and then jump to OS waking vector.
@ -503,6 +584,12 @@ S3ResumeBootOs (
Status = PeiServicesInstallPpi (&mPpiListEndOfPeiTable); Status = PeiServicesInstallPpi (&mPpiListEndOfPeiTable);
ASSERT_EFI_ERROR (Status); ASSERT_EFI_ERROR (Status);
//
// Signal EndOfS3Resume event.
//
Status = SignalEndOfS3Resume ();
ASSERT_EFI_ERROR (Status);
// //
// report status code on S3 resume // report status code on S3 resume
// //

4
UefiCpuPkg/Universal/Acpi/S3Resume2Pei/S3Resume2Pei.inf
View File

@ -85,6 +85,10 @@
gPeiSmmAccessPpiGuid ## SOMETIMES_CONSUMES gPeiSmmAccessPpiGuid ## SOMETIMES_CONSUMES
gPeiPostScriptTablePpiGuid ## SOMETIMES_PRODUCES gPeiPostScriptTablePpiGuid ## SOMETIMES_PRODUCES
gEfiEndOfPeiSignalPpiGuid ## SOMETIMES_PRODUCES gEfiEndOfPeiSignalPpiGuid ## SOMETIMES_PRODUCES
gEfiPeiSmmCommunicationPpiGuid ## SOMETIMES_CONSUMES
[Protocols]
gEdkiiSmmEndOfS3ResumeProtocolGuid ## SOMETIMES_CONSUMES
[FeaturePcd] [FeaturePcd]
gEfiMdeModulePkgTokenSpaceGuid.PcdDxeIplSwitchToLongMode ## CONSUMES gEfiMdeModulePkgTokenSpaceGuid.PcdDxeIplSwitchToLongMode ## CONSUMES